What the Next Gen car does differently at superspeedways

NASCAR introduced the Next Gen car in 2022 with structural changes designed to reduce the severity of crashes at superspeedways — tracks like Daytona and Talladega where cars run 190 mph or faster. The car's frame is stiffer, its fuel cell is positioned lower and farther back, and its suspension geometry absorbs impact differently than the previous generation. These changes mean that when a crash happens at high speed, the forces transfer through the car's structure in ways that reduce the peak deceleration a driver experiences.

The most visible change is the car's wider stance and different body shape, but the safety gains come from what you cannot see: the carbon fiber composite materials in the chassis, the reinforced driver compartment, and the repositioned center of gravity. At superspeedways specifically, where multi-car wrecks are common and speeds are highest, these structural differences matter because they reduce how quickly a driver's body decelerates during impact — the primary cause of serious injury in racing.

NASCAR also modified the aerodynamics of the Next Gen car to reduce the "push" that happens when one car runs directly behind another at high speed. This push makes it harder for a trailing driver to control the car and increases the likelihood of aggressive passing attempts that lead to wrecks. The changes do not eliminate side-by-side racing, but they make it less likely that a driver will lose control straightforward because of aerodynamic forces.

Key Takeaways

  • The Next Gen car's stiffer frame and repositioned fuel cell reduce the forces a driver experiences during a high-speed impact at superspeedways.
  • Carbon fiber composite materials in the chassis absorb and distribute crash energy differently than the previous car's steel frame.
  • Modified aerodynamics reduce the "push" effect that makes trailing cars harder to control, lowering the number of wrecks caused by aerodynamic instability alone.
  • The driver compartment is more heavily reinforced, and the seat and restraint system work together with the frame to protect against the specific types of impacts common at superspeedways.
  • Superspeedway-specific safety updates include adjustments to the rear wing and splitter that were tested extensively before the car raced at Daytona and Talladega.

How the frame and fuel cell positioning reduce injury risk

The Next Gen car's frame is built from a combination of steel and carbon fiber, with the steel concentrated in the areas that experience the most stress during a crash. The fuel cell — the tank that holds the car's gasoline — sits lower and farther back than it did in the previous generation. This repositioning lowers the car's center of gravity and moves weight away from the front end, which changes how the car behaves when it hits a wall or another vehicle at high speed.

When a car crashes head-on, the frame crumples in a controlled way, extending the time over which the impact occurs. A longer impact time means lower peak deceleration, which is what protects the driver. The fuel cell's new position also means it is less likely to rupture during a side impact or a hit to the rear quarter-panel — the areas where superspeedway wrecks most often occur. NASCAR worked with fuel cell manufacturers to test the new design at speeds and angles that match real crash scenarios.

The driver compartment itself is a reinforced cage made from high-strength steel. The Next Gen car's cage is larger and more robust than the previous generation's, with additional cross-bracing that keeps the compartment from collapsing inward during a multi-car wreck. The seat is mounted to this cage, not to the frame, so the driver's body is protected by the strongest part of the car.

Aerodynamic changes that reduce superspeedway wrecks

At superspeedways, aerodynamics determine how much control a driver has. When a car runs directly behind another at high speed, the lead car's slipstream pulls air away from the trailing car's front end, reducing downforce and making the car harder to steer. This is the "push" that drivers talk about. The Next Gen car's rear wing and splitter were redesigned to reduce this effect, though not eliminate it — some push is necessary for the racing to remain competitive.

The rear wing is smaller and angled differently than the previous generation's wing. The splitter — the flat panel under the front bumper — is also smaller. Together, these changes mean that a trailing car maintains more downforce even when it is running in the wake of the car ahead. This gives the driver more control and reduces the number of times a driver loses the car straightforward because of aerodynamic forces, rather than because of a mistake or an aggressive move by another driver.

NASCAR tested these aerodynamic changes in a wind tunnel and on the track before the Next Gen car raced at superspeedways. The goal was to keep the racing close and competitive while reducing the number of wrecks that start when a driver cannot control the car due to aerodynamic push. The changes have reduced but not eliminated multi-car wrecks at Daytona and Talladega.

Seat and restraint system improvements for high-speed impact

The driver's seat in the Next Gen car is a custom-molded unit that holds the driver's body in a fixed position relative to the frame. The seat is mounted to the reinforced cage, not to the frame, which means it moves with the strongest part of the car during a crash. The seat itself is designed to distribute forces across the driver's torso and legs, rather than concentrating force at a single point.

The restraint system includes a six-point harness — straps across the chest, lap, and shoulders — that keeps the driver from moving inside the cockpit during impact. The harness is attached to the seat and the cage, and it is designed to work with the seat to keep the driver's body aligned with the frame as the car decelerates. NASCAR also requires drivers to wear a head-and-neck restraint device, which limits the motion of the head and neck during a crash and reduces the risk of spinal injury.

The steering wheel is also designed to collapse on impact, absorbing some of the energy that would otherwise transfer to the driver's chest and arms. These components work together as a system: the frame absorbs the initial impact, the seat and cage protect the driver's core, and the restraints and head-and-neck device keep the driver's body in the safest position possible.

Testing and real-world performance at Daytona and Talladega

Before the Next Gen car raced at superspeedways, NASCAR conducted crash tests at the Indianapolis Motor Speedway's test facility. Engineers crashed the car into barriers at speeds and angles that match real superspeedway wrecks. They measured the deceleration forces inside the driver compartment and compared them to the previous generation's performance. The Next Gen car showed significantly lower peak deceleration in most scenarios, particularly in side impacts and rear-quarter impacts.

Since the Next Gen car began racing at Daytona and Talladega in 2022, the number of serious injuries has remained low, though wrecks still occur. The car has been involved in several high-speed crashes, including multi-car wrecks, and drivers have walked away from impacts that would have caused serious injury in the previous generation. NASCAR continues to monitor crash data and makes adjustments to the car's design based on what happens on the track.

The superspeedway-specific updates to the Next Gen car are ongoing. NASCAR has made adjustments to the rear wing, splitter, and other aerodynamic components based on data from races at Daytona and Talladega. These adjustments are made to balance safety with competitive racing — the goal is to reduce wrecks without making the racing so processional that fans lose interest.

How superspeedway safety differs from other track types

Superspeedways present unique safety challenges because of the combination of high speed, close racing, and the aerodynamic effects that make cars hard to control. At road courses and shorter ovals, crashes happen at lower speeds or involve single cars running off the track. At superspeedways, crashes often involve multiple cars and happen at speeds above 180 mph, which means the forces involved are much larger.

The Next Gen car's safety features are designed with superspeedways in mind, but they also protect drivers at other track types. The stiffer frame and reinforced driver compartment help at all speeds. The aerodynamic changes are most relevant at superspeedways, where push is a constant factor, but they also affect how the car behaves at intermediate tracks like Charlotte and Kansas.

NASCAR also uses different safety equipment at superspeedways, including larger catch fencing and SAFER barriers — steel and foam barriers that absorb impact energy — at the most dangerous corners. These track-level safety measures work alongside the car's design to reduce injury risk.

What drivers and teams say about Next Gen safety at high speed

Drivers have reported that the Next Gen car feels more stable at superspeedways than the previous generation, particularly when running in traffic. The reduced push means drivers have more control when they are running behind another car, which reduces the number of times a driver has to make a sudden correction to avoid a wreck. Teams have also noted that the car is easier to repair after a crash because the frame is designed to absorb impact without collapsing in unpredictable ways.

Some drivers have expressed concern that the aerodynamic changes have made superspeedway racing less exciting because there is less side-by-side racing and fewer passing attempts. This is a trade-off: the changes that make the car safer also make it harder for a trailing car to pass, which means fewer wrecks but also fewer dramatic moments. NASCAR has adjusted the aerodynamic package multiple times since 2022 to try to balance safety and racing quality.

Frequently Asked Questions

Are superspeedway crashes less severe in the Next Gen car?

Crash test data shows that the Next Gen car experiences lower peak deceleration during impact compared to the previous generation, which means drivers experience less force during a crash. Real-world data from races at Daytona and Talladega since 2022 shows that serious injuries remain rare, though wrecks still occur regularly. The car has not eliminated crashes, but it has reduced the severity of the impacts drivers experience.

Why does the Next Gen car still have wrecks at superspeedways if it is safer?

The Next Gen car reduces injury risk during a crash, but it does not prevent crashes from happening. Wrecks at superspeedways are caused by driver error, aggressive racing, and aerodynamic effects. The car's design makes crashes less likely and less severe when they do occur, but racing at 190 mph with 40 cars on the track will always involve some risk of collision.

Can the Next Gen car's safety features be used in other racing series?

Some features, like the reinforced driver compartment and improved seat design, are used in other racing series. The aerodynamic changes are specific to NASCAR's rules and the superspeedway environment, so they would not transfer directly to other series. Other racing organizations have developed their own safety improvements based on similar principles of frame stiffness and impact energy absorption.

What happens if a Next Gen car is damaged in a crash at a superspeedway?

If the damage is to the aerodynamic components or the body panels, the team can often repair it during a caution period. If the frame or driver compartment is damaged, the car is usually too damaged to continue racing safely. The reinforced cage is designed to protect the driver, but if it is compromised, the car must be retired from the race.

Has NASCAR made any changes to Next Gen safety since 2022?

Yes, NASCAR has made adjustments to the rear wing, splitter, and other aerodynamic components based on data from races. The company has also continued to test the car's crash performance and has made minor modifications to the frame and restraint system. These updates are made gradually and are tested before being introduced at races.